Results 11 to 20 of about 35,996 (301)
Increased pulp yield by prolonged impregnation in softwood kraft pulping
Nordic Pulp & Paper Research Journal, 2017 The effect on kraft cooking proceeded by an impregnation stage performed at 130 degrees C for 30 min was compared to kraft cooking following prolonged impregnation at 105 degrees C for 60-120 min.
Daniel Tavast +3 more
core +2 more sources
Improved pulp yield and strength by retained glucomannans in kraft pulping of softwood
Nordic Pulp & Paper Research Journal, 2015 The possibilities of improving yield and strength properties of softwood bleached kraft pulps by retaining a higher content of glucomannan during kraft cooking using additives that decrease the rate of carbohydrate degradation were looked upon.
Salmen, Lennart +2 more
core +2 more sources
Influence on pulping yield and pulp properties of wood density of Acacia melanoxylon
Journal of Wood Science, 2012 DOI 10.1007/s10086-012-1286-2Wood density and pulp yield are key parameters in the evaluation of tree productivity and quality for pulping and their relationships are of high practical importance.
Simões, Rogério +5 more
core +3 more sources
Jurnal Rekayasa Kimia & Lingkungan, 2012 Formic acid pulping of oil palm frond was conducted to study the influence of process variables (formic acid concentration, hydrogen peroxide concentration, and pulping time) on the properties of pulp produced (yield pulp and lignin content).
Zulfansyah Zulfansyah +4 more
doaj +5 more sources
DEVELOPMENT OF A NOVEL EMPIRICAL MODEL TO ESTIMATE THE KRAFT PULP YIELD OF FAST-GROWING EUCALYPTUS
BioResources, 2012 In this study, several kraft pulps were produced by kraft pulping of fast-growing Eucalyptus with a wide range of cooking conditions. The dependences between pulp yields and some pulp properties, namely, kappa number, HexA contents, and cellulose ...
Jing Liu,, Huichao Hu,, Xiaolin Luo,
doaj +1 more source
The relationship of pulp yield with ethanol pulping concentrations on Acacia hybrid [PDF]
Journal of the Indian Academy of Wood Science, 2016 This study aimed at determining the total yield, screened yield, rejected yield, Kappa number and viscosity of organosolv Acacia hybrid pulp. Acacia hybrid wood chips of uniform size were used to undergo pulping in a digester with five different ethanol concentrations, 50, 60, 70, 80 and 90 % (v/v) with 1 M of sodium hydroxide as catalyst and water ...
Kang Chiang Liew, Eunice Wan Ni Chong
openaire +1 more source
Produksi bio-oil dan bio-arang dari mata kayu industri pulp melalui pirolisis [Production of bio-oil and bio-char from knot in pulp mill through pyrolysis] [PDF]
, 2019 Acacia mangium knotis one of the biomass reject produced from the wood chemical pulping processes. This raw material is suitable for the production of bio-oil and bio-char in competitive costs.
Syamsudin, Syamsudin; Balai Besar Pulp dan Kertas
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Temperature and effective alkali effect on brown pulp kraft cooking
, 2021 One way to obtain high quality pulp production is to improve selectivity delignification of step, maximize yield. Brown pulp yield and chemical composition were studied, with variation of temperature and effective alkali in Kraft cooking.
de Oliveira, Iliane Rodrigues [UNESP] +3 more
core +1 more source
Biomass Conversion and Biorefinery, 2023 AbstractThe chemical pulping of wood chips using deep eutectic solvents (DES-pulping) has emerged as an alternative technology to conventional pulping in the paper industry, allowing the production of pulp in combination with the recovery of lignin and sugars for valorization.
Alan D. Pérez +4 more
openaire +1 more source
JAPAN TAPPI JOURNAL, 2004 本報告では，連続クラフト蒸解における広葉樹材クラフトパルプの高収率化とその評価法の研究に関する前報を総合し，考察を加えた。クラフト蒸解液（白液）にポリサルファイド（PS），および，アントラキノン（AQ）を添加すると，パルプ収率が約4．5―5％向上した。また，黒液を白液で置換することにより，収率はさらに向上した。添加する全ての活性アルカリ（AA）の70％を含むPS蒸解液，および，AQを反応開始時から用い，蒸解温度が135℃に到達したときに，残りの30％のAAを含む白液で黒液を交換すると，最高のパルプ収率が得られた。広葉樹材クラフトパルプの収率と，パルプの酸加水分解により得られるキシロースのグルコースに対する量比（X／G比）の間には，良い相関関係が存在した。しかし，この関係は原料樹種に依存するため，X ...
Yokoyama, Tomoya, Ohi, Hiroshi
openaire +3 more sources